TITLE:
Internet Explorer 7 Popup Address Bar Spoofing Weakness

SECUNIA ADVISORY ID:
SA22542

VERIFY ADVISORY:
http://secunia.com/advisories/22542/

CRITICAL:
Less critical

IMPACT:
Spoofing

WHERE:
>From remote

SOFTWARE:
Microsoft Internet Explorer 7.x
http://secunia.com/product/12366/

DESCRIPTION:
A weakness has been discovered in Internet Explorer, which can
be exploited by malicious people to conduct phishing attacks.

The problem is that it's possible to display a popup with a
somewhat spoofed address bar where a number of special
characters have been appended to the URL. This makes it
possible to only display a part of the address bar, which may
trick users into performing certain unintended actions.

Secunia has constructed a demonstration, which is available at:
http://secunia.com/internet_explorer_7_popup_address_bar_spoofing_test/

The weakness is confirmed in Internet Explorer 7 on a fully
patched Windows XP SP2 system.

SOLUTION:
Do not follow links from untrusted sources.
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